Grain-scouring machine



2 Sheets-Sheet 1.

(No Model.)

J. BL HAR RIS.

GRAIN SCOURING MACHINE.

Patented Dec. '9

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(N0 Modem 2 r 2 Sheets-Sheet 2.

J. B. HARRIS.

GRAIN SOOURING MACHINE. o. 308,894. I Patented Dec. 9! 1884.

N. PETERS. Plmmumo n mr, wnnin mn. 0Y0.

. rior surface of the scouring-cylinder.

companying drawings, forming a part of this JOHN B. HARRIS, OF

PATENT OTTAWA, ILLINOIS.

GRAIN-SCOURING MACHINE.

EPECIFICATION forming part of Letters Patent No. 308,894, dated December 9, 1884.

Application filed December 6, 1883. No model.)

To all whom it may concern: Y

Be it known that I, JOHN B, HARRIS, of Ottawa, in the county of La Salle and State of Illinois, have invented certain new and useful Improvements in Grain-Securing Machines, of which the following is a full, clear, and eX- act description, that will enable others to make and use the same, reference being had to the acspecification.

This invention relates to an improved apparatus for cleaning and scouring wheat and other cereals; and it consists of certain novel features of construction and combinations of parts, as will be hereinafter more fully set forth and claimed.

Figure 1 is an elevation of a grain-scourer embodying my improved features; Fig. 2, a vertical longitudinal section of the same; Fig. 3, a top view of the same; Fig. 4, a transverse section; Fig. 5, a part or section, broken out, of the scouring-cylinder; Fig. 6, a modification, and Figs. 7, 8, and 9 details of the same.

Referring to the drawings, A represents the scouring-cylinder, the inclosing-walls thereof being formed of coiled wire, wound spirally, one coil being laid upon the other in continuous order until a scouring-cylinder of the required length is completed. This coiled tube is made by coiling a singlewire closely around a mandrel in the same manner in which a spiral spring is made, and forms a tube of about one-half of an inch in diameter. This construction presents a spiral corrugated scouring-surface, and leaves a great number of minute openings, a, between the coils for the escape of the dust and refuse matter removed from the grain, as shown in Fig. 5 of the drawings. The ends of the scouring-cylinder are closed by the overlapping 'heads or ends B B, which are perforated around the edge for the reception of the series of tie-rods O, which extend along the longitudinal exte- The ends of these rods are threaded for the engagement of screwnuts, whereby the 'coils may be drawn close together and retained in proper position relative to each other to form the scouring-cylinder.

One or more encircling-bands, a, may be used, which serve to stifien the tie-rods and strengthen the structure, and at the same time assist in securing a true cylindrical contour. The upper end or head, B, of the scouringcylinder is provided with the receiving-hopper a the exit or discharge spout a being located at the opposite end or head, B. The rotating brush-cylinder D is placed on the inside of and is inclosed by the scouring-cylinder, and extends the whole length of the same,

A but is of a less diameter, in order to provide the annular space (0* between the adjacent surfaces of the two cylinders, and also leave a narrow space between the longitudinal rows or groups of brushes, as shown in Fig. 4, so

that the ends of the brushes will not have fric tional contact with the scouringsurface of the wire cylinder, but allow the grain to pass between. The brush-cylinder is mounted on the shaft D, which projects through and is journaled in the ends of the scouring-cylinder.

(1 represents the band or driving pulley. The scouring-cylinder, being composed of a coiled tubedaid up from a single strand of wire, provides for a free circulation of air, thus preventing the scouring-surface from becoming heated by friction, as would be the case were the scouring-cylinder of the usual construction. This construction and arrangement brings the coil of the wire nearly straight up and down, thus forming an abrupt and irregular abrading-surface,which greatly shortens and facilitates the decorticating process, thereby producing a much better result than if the scouring-cylinder were laid up of common wire rope, which, being solid, is very liable to become heated from the rubbing of the grain; and also provides a cylinder having long grooves in the scouring-surface, which offers but little, if any, obstruction to the passage of the grain, being, in fact, but little more than a smooth scouring-surface.

The modification illustrated by Figs. 6, 7, 8, and 9 shows how the sc0uring-cylinder may be constructed in two distinct semicircular parts, in which case the said cylinder is not composed of a continuous coil, but of a series of half-coils, E, built or laid up in regular order. The ribs F F extend the whole length of the scouring-cylinder and securely hold the half-coils in proper relation to each other. The short pins h, projecting from the inner sides of the ribs, are corrugated or notched,

so as to present a rounded bearing surface equal in diameter to the ends of the half-coils, thereby forming an unbroken scouring-sur- 5 face.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a grain scouring and cleaning apparatus, a scouring-cylinder composed of closelycoiled-wire tube, substantially as and for the purpose set forth.

2. In a grain-scouring apparatus, the (30111- bination, with a scouring cylinder formed of 15 a closely-coiled-wire tube laid up spirally, of

1 l l l l the heads or ends B B and the series of tierods 0, whereby the wire coils are clamped together with relation to each other.

3. In a grainscouring apparatus, the combination, with a scouring-cylinder, the corrugated abradingsurface of which is formed of a coiled tube composed of a single strand of wire, of the brush-cylinder D, provided with longitudinal rows of brushes arranged in groups, substantially as described.

' JOHN B. HARRI \Vitncsses:

OTTO G. FORMHALS, O. MOOULLY. 

